Reto-Moto has announced that the Vasilevsky update to Heroes & Generals has been applied across all servers. The patch brings several new features into the game, most notably improved melee mechanics, tweaks to weapons, improved visuals and a new morale system for Assault Teams among other improvements and bug fixes.
Generals and officers now have to take morale of their troops into consideration when they manage the war resources and execute their strategies, as Assault Teams lose morale every time they enter a battle. Even though they do gain some back by winning, they will not gain more than they lost. This means that like in real war, Assault Teams can't keep attacking but have to stop and rest every once in a while even if they win every battle.
Read the full patch notes on the Heroes & Generals forum.