Meanwhile the 5th Regiment was moving into line, machine guns were advancing, and the artillery taking its position. That night the men and officers of the marines slept in the open, many of them in a field that was green with unharvested wheat, awaiting the time when they should be summoned to battle. The next day at 5 o'clock, the afternoon of June 2, began the battle of Chateau-Thierry, with the Americans holding the line against the most vicious wedge of the German advance. The advance of the Germans was across a wheat field, driving at Hill 165 and advancing in smooth columns. The United States marines, trained to keen observation upon the rifle range, nearly every one of them wearing a marksman's medal or better, that of the sharpshooter or expert rifleman, did not wait for those gray-clad hordes to advance nearer. Calmly they set their sights and aimed with the same precision that they had shown upon the rifle ranges at Paris Island, Mare Island, and Quantico. Incessantly their rifles cracked, and with their fire came the support of the artillery. The machine-gun fire, incessant also, began to make its inroads upon the advancing forces. Closer and closer the shrapnel burst to its targets. Caught in a seething wave of machine-gun fire, of scattering shrapnel, of accurate rifle fire, the Germans found themselves in a position in which further advance could only mean absolute suicide. The lines hesitated. They stopped. They broke for cover, while the marines raked the woods and ravines in which they had taken refuge with machine gun and rifle to prevent them making another attempt to advance by infiltrating through. Above, a French airplane was checking up on the artillery fire. Surprised by the fact that men should deliberately set their sights, adjust their range, and then fire deliberately at an advancing foe, each man picking his target, instead of firing merely in the direction of the enemy, the aviator signaled below "Bravo!" In the rear that word was echoed again and again. The German drive on Paris had been stopped.