A grouping of several types of troops assembled to fight together(noun)
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Use "battlegroup" in a sentence
"Divisional, brigade, battlegroup and company commanders with recent experience in Afghanistan and Iraq (and Kosovo, Bosnia and Northern Ireland) are posted into the MoD every week."
"Anyone bet that there will be a US carrier battlegroup sauntering up the Bosphorus anytime soon?"
"A multinational battlegroup sets out to engage this threat, but is cast back in time, right in the middle of the Pacific War in 1942."