REENFORCEMENT
support, reinforcement, reenforcement
(noun) a military operation (often involving new supplies of men and materiel) to strengthen a military force or aid in the performance of its mission; “they called for artillery support”
reinforcement, reenforcement
(noun) information that makes more forcible or convincing; “his gestures provided eloquent reinforcement for his complaints”
Source: WordNet® 3.1
Re`Ă«n*force"ment (r`n*frs"ment), n.
1. The act of reënforcing, or the state of being reënforced.
2. That which reënforces; additional force; especially, additional
troops or force to augment the strength of any army, or ships to
strengthen a navy or fleet.
Source: Webster’s Unabridged Dictionary 1913 Edition