reinforce

To give more force or effectiveness to; strengthen.

To strengthen (a military force) with additional personnel or equipment.

To strengthen by adding extra support or material.

To increase the number or amount of; augment.

To reward (an experimental subject, for example) with a reinforcer subsequent to a desired response or performance.

To encourage (a response) by means of a reinforcer.

An additional thickness or support imparted to any part of an object in order to strengthen it.

To add new force, strength, or weight to; strengthen: as, to reinforce an argument.

Specifically Milit., to strengthen with additional military or naval forces, as troops, ships, etc.