What is the difference between a garrison and a reinforcement?
the only difference between the 2 is who's stats count. When you reinforce a player, they join that players army in combat and their stats (gear, talents etc.) count in battle.
if you garrison a player, then you will fight a seperate battle and your stats count. if a enemy attacks a player where you sent garrison to, they will first fight your garrison seperatly and if they win, they will fight the defending castle's army with the troops that were left unharmed.