At first in Warfare 1917, you can only create one type of army and all you have to do is click on the build units button. You will see how more and more units appear in the first trench. You should create new soldiers continuously, so keep an eye on the button. You can choose between standing in the trench and attacking, but if you remain in the same spot for a while the morale of your army will start to decrease. When the morale bar is empty, your soldiers will surrender. If you manage to kill everyone and your soldiers advance to the territory of your enemy, you will be victorious. Between levels you can upgrade your forces and take a look at statistics. Each new level will come with a special addition such as landmines, barbwire or air support. If you get far enough into the game, you will even receive tanks and snipers which can improve the performance of your army drastically. Warfare 1917 is controlled by mouse alone and you just have to follow some basic instructions as you go along. One of the best parts about this game is that your progress will be automatically saved at the end of each round. This way, you don't have to worry if you lose one round of Warfare 1917 because you can restart it and try again.