Hi Hugh and welsome to the Aerodrome !
Here's a synopsis for SPA 86:
Created as N.86 6 April 1917 at Bonnemainson under the command of Capitaine Andre Brault-Lefevre de Noettes.
Re-equipped with SPADs and redesignated SPA 86 in the 1st trimester of 1918.
30 (or 31) Confirmed victories, 6 pilots KIA, 4 MIA, 2 Killed in accidents, 2 Wounded, 3 POW including Sgt. Shukunosuke Kobayashi a Japanese pilot attached to the unit. Lt. Larner, an American later assigned to the US 103rd Aero was also with the unit.
Get a copy of Over the Front Volume 16, No. 3 Fall 2001. It contains an excellent article by Bill Bailey and Al Roeseler on Groupe de Combat 14 of which SPA 86 was an element. There are severl goo photos of SPA 86 airplanes, a color profile on the rear cover and a fron cover painting of one of their SPAD VII's.
It also contains a combat log for the unit and a list of personnel.
Visit
Welcome to The League of WWI Aviation Historians if interested in getting a copy of this excellent journal.
I've attached a version of their unit insignia.
-Mike