The players of Army XI dominated the game right from the start and took a 1-0 lead in the fourth minute through a goal by Arjun Tuddu when his powerful right footer found the target.
The SBT outfit had a solitary chance to equalise in the 23rd minute but Sahjeer's shot went in vain and the first half ended 1-0.
In the second half SBT grouped together to create a few chances, but their forward line did not turn them into goals. Finally Jijo Joshep managed to sneak one in the opposition nets in the 55th minute after receiving a pass from Shahjeer.
The Army men completely dominated the extra time and pumped in two goals within nine minutes.
Arjun Tuddu struck in the 94th minute through a penalty and Manjoor Herojitn pipped in the 99th minute after getting a cross pass from mid-fielder Francis.
In the last quarterfinal match tomorrow, Nagpur Football Club will clash with Junior Army (Lucknow).