Squadron vice-admiral is an Anglicisation

Anglicisation

Anglicisation, or anglicization , is the process of converting verbal or written elements of any other language into a form that is more comprehensible to an English speaker, or, more generally, of altering something such that it becomes English in form or character.The term most often refers to...

 of a naval rank

Military rank

Military rank is a system of hierarchical relationships in armed forces or civil institutions organized along military lines. Usually, uniforms denote the bearer's rank by particular insignia affixed to the uniforms...

 found in some navies of the world. The squadron vice-admiral, which could also be accurately translated as fleet vice-admiral, leads a squadron

Squadron (naval)

A squadron, or naval squadron, is a unit of 3-4 major warships, transport ships, submarines, or sometimes small craft that may be part of a larger task force or a fleet...

 and is typically senior to a vice-admiral and junior to an admiral

Admiral

Admiral is the rank, or part of the name of the ranks, of the highest naval officers. It is usually considered a full admiral and above vice admiral and below admiral of the fleet . It is usually abbreviated to "Adm" or "ADM"...

.

This anglicisation is not often used in practice, as the rank is usually kept in the original language or rendered as Vice-Admiral. The main navy to use the rank of squadron vice-admiral is the French Navy

French Navy

The French Navy, officially the Marine nationale and often called La Royale is the maritime arm of the French military. It includes a full range of fighting vessels, from patrol boats to a nuclear powered aircraft carrier and 10 nuclear-powered submarines, four of which are capable of launching...

 (vice-amiral d'escadre), where it is a four-star rank with a NATO code of OF-8, equivalent to corps general

Corps General

Corps General is a rank corresponding to the Commonwealth and US rank of Lieutenant General. For convenience the rank in foreign armies is normally actually translated as Lieutenant General. In France a général de corps d'armée is actually an appointment of Divisional General, rather than a...

 or lieutenant general

Lieutenant General

Lieutenant General is a military rank used in many countries. The rank traces its origins to the Middle Ages where the title of Lieutenant General was held by the second in command on the battlefield, who was normally subordinate to a Captain General....

 in seniority. Officially, it is not a rank, but a style and position (rang et appelation in French) bestowed upon some vice-admiral (which is the actual highest substantive rank

Ranks in the French Navy

The rank insignia of the French Navy are worn on shoulder straps of shirts and white jackets, and on sleeves for navy jackets and mantels....

 and is a three-star rank with NATO code OF-7 equivalent to rear admiral

Rear Admiral

Rear admiral is a naval commissioned officer rank above that of a commodore and captain, and below that of a vice admiral. It is generally regarded as the lowest of the "admiral" ranks, which are also sometimes referred to as "flag officers" or "flag ranks"...

 (upper half) or major general

Major General

Major general or major-general is a military rank used in many countries. It is derived from the older rank of sergeant major general. A major general is a high-ranking officer, normally subordinate to the rank of lieutenant general and senior to the ranks of brigadier and brigadier general...

).