Bringing together military forces WordNet 3.0 & Open English WordNet

Force concentration is the practice of concentrating a military force so as to bring to bear such overwhelming force against a portion of an enemy force that the disparity between the two forces alone acts as a force multiplier in favour of the concentrated forces. Wikipedia

Military strategy Wikidata

The act, process or ability of concentrating; the process of becoming concentrated, or the state of being concentrated. Wiktionary

Act or process of concentrating. Wiktionary (translation)