Tanker boots are military

Military

A military is an organization authorized by its greater society to use lethal force, usually including use of weapons, in defending its country by combating actual or perceived threats. The military may have additional functions of use to its greater society, such as advancing a political agenda e.g...

 boot

Boot

A boot is a type of footwear but they are not shoes. Most boots mainly cover the foot and the ankle and extend up the leg, sometimes as far as the knee or even the hip. Most boots have a heel that is clearly distinguishable from the rest of the sole, even if the two are made of one piece....

s closely associated with soldier

Soldier

A soldier is a member of the land component of national armed forces; whereas a soldier hired for service in a foreign army would be termed a mercenary...

s who serve on tank

Tank

A tank is a tracked, armoured fighting vehicle designed for front-line combat which combines operational mobility, tactical offensive, and defensive capabilities...

s and tracked vehicles in general. It is said the idea was borrowed from the French crewmen encountered during World War I when then-Captain George S. Patton, Jr.

George S. Patton

George Smith Patton, Jr. was a United States Army officer best known for his leadership while commanding corps and armies as a general during World War II. He was also well known for his eccentricity and controversial outspokenness.Patton was commissioned in the U.S. Army after his graduation from...

 established the United States Tank Corps. Whereas regular combat boot

Combat boot

Combat boots are military boots designed to be worn by soldiers during actual combat or combat training as opposed to during parades and other ceremonial duties. Modern combat boots are designed to provide a combination of grip, ankle stability, and foot protection suitable to a rugged environment....

s are laced through metal eyelets in the leather upper, the tanker boots are fastened with leather

Leather

Leather is a durable and flexible material created via the tanning of putrescible animal rawhide and skin, primarily cattlehide. It can be produced through different manufacturing processes, ranging from cottage industry to heavy industry.-Forms:...

 straps which wrap around the upper and buckle near the top. This benefits the wearer in several ways:

• The single biggest advantage is that tanker boots use leather straps, rather than laces, to fasten to the wearer's feet. The problem with laces is that they can become undone easily and then entangled in the many exposed, moving parts of a tank, for instance the turret ring, and drag the wearer or part of his body into the machinery.

• Many boots have nylon or canvas panels in their uppers and also nylon laces which will melt if exposed to fire. Melting boots and laces will serve to further injure a crewman and make his evacuation of the vehicle more difficult.

• Tracked crewmen typically find themselves working in very muddy environments. Another advantage of tanker boots is that they are much easier to loosen than a regular laced boot when caked in mud.

• Also, today's modern tankers are exposed to many harmful chemicals - Flame-Resistant Hydraulic Fluid (FRH), turboshaft transmission fluid, grease, oils and various fuels. The all-leather construction of tanker boots prevents absorption of these chemicals into the boots and coming into close and prolonged contact with the wearer's skin.

• Tanker boots also allow for improved circulation to crewmember's feet, as they may be sitting or immobile for long periods of time. Tank crewman during the Gulf War reported remaining seated at their gunners', drivers', and commanders' stations for periods up to the entire 100 hours of ground combat.

• Tanker boots, unlike most traditional combat boots, have the tongue sewn into the boot up to about 1 to 1.5 in (2.5 to 3.8 ) shy of the top of the boot, to make the boot more readily waterproofed (up to 14 in (35.6 cm) of water depth can be stood in without ingress of water when sealed/waxed properly, depending on the height of the boot design); the tongue is made with excess leather left and right that doesn't require it to separate to remove the foot. However, the new desert tanker boots are not water proof at all.

• Tanker boots are normally equipped with steel toe guards, steel or plastic shank/heel guards, and in at least modern variants, steel or other protective metal inserts in portions of the sole as well, as befit a boot intended for an operating environment filled with metal hazards that can be accidentally kicked/dropped/stepped upon/et cetera (as opposed to the traditional combat boot designed for a sandy or muddy battlefield environment). When the desert tanker boots came out, it was not authorized to have steel toe inserts for fear that the crewman may have his toe cut off if too much weight was put on the boot.

Tanker boots have a significant disadvantage over traditional lace up combat boots in that they provide comparatively little ankle support; however for troops that fight sitting in an armoured vehicle, this is relatively unimportant.

• An unauthorized variant of the tanker boot is the cavalry boot, or'cav boot', which is higher above the ankle
  Ankle
  The ankle joint is formed where the foot and the leg meet. The ankle, or talocrural joint, is a synovial hinge joint that connects the distal ends of the tibia and fibula in the lower limb with the proximal end of the talus bone in the foot...
  
   (in imitation of riding boot
  Riding boot
  A riding boot is a boot made to be used for horse riding. The classic boot comes high enough up the leg to prevent the leathers of the saddle from pinching the leg of the rider, has a sturdy toe to protect the rider's foot when on the ground, and has a distinct heel to prevent the foot from sliding...
  
  s worn by the old horse cavalry
  Cavalry
  Cavalry or horsemen were soldiers or warriors who fought mounted on horseback. Cavalry were historically the third oldest and the most mobile of the combat arms...
  
  ) and might be worn by soldiers assigned to armored cavalry squadrons and scout units. The cav boots are more commonly seen being worn by officers in armored cavalry units.

Lore

Tanker boots are said to have originated somewhat by accident. The story claims that there was once a tank crew member whose boot's laces were burnt by an ejected casing. Another member of the crew took off his belt and wrapped it around the damaged boot as a sort of temporary fix, making it the first tanker boot.

Another story mentions that when soldiers had to get out of the tank, their boots became wet with snow and after the fight they froze, causing the laces to break. One of the generals (General Patton, from the original story) gave the lowest ranking soldier the straps off of his cavalier pistol holster to strap his boots. From that point on, many soldiers started to use this.

The story goes on to mention that it became a tanker tradition, that you had to shoot a gunnery to earn them. However, tankers
uphold this tradition today in the USA by earning their tanker boots only after they "qualify"(qualify first round with 700 out of 1000 PTS with 7 out of 10 engagements qualified on Tank Table VIII) at gunnery, meaning their performance earns them the required number of points, or by serving on a tank during a deployment to a combat zone, i.e. Iraq or Afghanistan.