Points are awarded for combats, and the number is directly tied to the achievements in the given combat. 
Points can be won for:

• participation [1 point]
• company's victory [3 points]
• defending the line - when we have a better score [6 points] or a worse score [4 points]
• the 'Champion' title [3 points]
• the 'Breaker' title [3 points]

You can obtain max. 16 points for one combat.