This is why every military in the world spends thousands of hours, and millions of rounds to help their soldiers become better marksmen, and become proficient with their firearms. Training a soldier to become a better marksman requires a lot of practice, which means that they have to shoot thousands of rounds. This is quite expensive. In fact, according to estimates from the U.S. Army training and doctrine command, training a single soldier in the US army or US marine corps
can cost between $11,000 to $40,000.
This is an estimate for training an average foot soldier, who trains marksmanship with their rifle and sidearm. Imagine the cost of training soldiers to use more advanced weapons, like heavy anti-aircraft and anti-material guns, which use more expensive ammo, anti-tank missiles, mortars, and mobile artillery.
So, the ammunition and training costs for even a single soldier can reach thousands of dollars, and when you consider the cost for an entire army, it can sum up to billions of dollars.
Moreover, training with these weapons can be dangerous. As recruits use firearms and other military weapons for the first time, the chances of accidents and unnecessary injuries are also higher. Therefore, militaries worldwide are always searching for new and modern training methods that can help decrease training costs and make training environments safer and more effective.