Early in the war, many Americans showed a sincere interest in joining the French Air Service. The popularity of the air service among French Soldiers coupled with a suspected spying incident by an American who deserted the air service early in the war, created some resistance by the French initially.
Requests for entry were being granted on an individual basis, usually with the help of a French official. Americans began flying as both pilots and observers within French squadrons with no less than 7 future Lafayette Escadrille members serving in these capacities.
Many were assigned to bombing units flying Voisin pusher style biplanes. Bert Hall flew with a Nieuport squadron. William Thaw was assigned to a Caudron squadron, Escadrille C.42 commanded by Capitaine Georges Thenault, whom eventually became commander of the Lafayette Escadrille.
