Around 7 PM, Brig Shaffi’s troops were ambushed near Kumira, losing 10 killed, and suffering almost 100 casualties, including Lt. Col. Shahpur Khan (CO 24 FF). Brig Shaffi himself had to flee for the hills, and 2 truck full of arms were recovered by the Bengalis. Half the convoy was outside the ambush firing range and Pakistanis, commanded by Major Amzad Hussain (Bengali -2IC 24 FF) fought back, and a 2 hour long battle ensued. The mortars were handled by Captain Fazlur Rahman Bhuyan (Bengali), who ironically was a Kakul Academy batch mate of Captain S.A. Bhuyan, leading the Bengali ambush. The Pakistani column lost all contact with Comilla and the GHQ at Dhaka, raising fears that it had been wiped out, which, if true, might have crippled the Pakistani effort. The EPR HQ and Railway hill came under intense bombardment by Pakistani naval ships (PNS Jahangir and 2 gunboats) and artillery during the day. Pakistani troops launched two attacks on the Railway hill and EPR HQ after a 2 hour barrage around 8:30 PM, but both attacks were repulsed. Pakistanis continued to shell both areas throughout the night.