WATCH: Test of MOAB, 'Mother of All Bombs,' the U.S. Largest Non-nuclear Bomb

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MOAB test
MOAB testCredit: Screenshot

The United States dropped a massive GBU-43 bomb, also known as the "mother of all bombs" or MOAB, in eastern Afghanistan on Thursday against a series of caves used by Islamic State militants, the military said. 

It was the first time this type of bomb had been used in combat and was dropped from a MC-130 aircraft, Pentagon spokesman Adam Stump said. 

Archive footage: Testing the MOAB

What is MOAB? Read more here.