As a platoon commander, de Gaulle was involved in fierce fighting from the outset. He received his baptism of fire on 15 August and was among the first to be wounded, receiving a bullet in the knee at the Battle of Dinant. It is sometimes claimed that in hospital, he grew bitter at the tactics used, and spoke with other injured officers against the outdated methods of the French army. However, there is no contemporary evidence that he understood the importance of artillery in modern warfare. Instead, in his writing at the time, he criticised the "overrapid" offensive, the inadequacy of French generals, and the "slowness of the English troops".