military capability has 4 distinct synonyms spread across 1 of its 1 sense. Each sense below keeps its own list, because a synonym belongs to a meaning and not to a word: swapping one sense's substitute into another sense's sentence is how a thesaurus makes writing worse. WordNet records no antonym for it — antonymy is a relation between word forms rather than concepts, so it is deliberately sparse.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
capability in terms of personnel and materiel that affect the capacity to fight a war
“we faced an army of great strength”
Synonyms, antonyms and the broader and narrower relations for military capability come from Princeton University’s WordNet. Full sources and licences.