During the Chateau-Thierry campaign, Foulois also encountered many problems with the Air Service's efforts to keep his squadrons at the front supplied with replacement airplanes and personnel.
In July 1918, as the Inspector General was investigating Mitchell's actions during the Chateau-Thierry operation, Foulois on his own initiative went to the investigators and informed them he felt that Mitchell had taken appropriate actions and he would have done the same under similar circumstances.
Shortly before the 1st Pursuit Group arrived in the Chateau-Thierry sector, Reinhard sent a report to his superiors indicating that the Germans had established air superiority: "Since the beginning of the planned assault the Frenchman has been very cautious, completely on the defensive, and only seldom crosses the lines.
The Chateau-Thierry campaign served as his postgraduate education in aerial warfare.
The initial plan, though hastily conceived after the unit's arrival at Touquin, demonstrates that the leaders of the 1st Pursuit Group understood the importance of concentrating their aircraft in large formations from the beginning to meet the enemy threat at Chateau-Thierry.
Notons au passage que, parmi les "Cahiers" consultes le plus court, celui du tier-setat de Saint-Germain-en-Laye, n'est que de 14 pages, y compris le proces-verbal; le plus long, celui du tiers-etat du bailliage de Chateau-Thierry, contient 81 pages.
Ont ete consultes, au hasard, les cahiers des bailliages et senechaussees suivants: CLERGE: Saintonge, Colmar, Selestat, Peronne, Mondidier & Roye, Dijon, Limoges, Saint-Yrieux, Metz, Nantes, Meulan, Meaux, Libourne, Lyonb, Saint-Paul, Troyes d'Aubervilliers, Rouen; TIERS-ETAT: Chateau-Thierry, Saint-Germain-en-Laye, Marsan, Lyon, Nimes, Saumur, Calais, Ardres, Meudon, Dax Saint-Sever, Baionne (sic), Perigueux, Sarlat, Bergerac, Dourdan; NOBLESSE: Condom, Meaux, Labour, Dourdan, Sens et Villeneuve-le-Roi, Douay, Orchies, Haut-Vavarais.
Contract award notice: current supply contract and multi-service services (epernay - chateau-thierry
and 51 - 02) and technical penalty heritage plurial novilia (marne, haute-marne, aisne, ardennes and meuse.