Both East windows in the Chapel are dedicated to the memory of Bernard & Mervy Coller, killed in WWI and Raymond Coller killed in WWII. It is assumed that the latter was added to the dedication after the windows had been completed.
In the main lights we see Christ and Mary Magdalen in the garden after the resurrection. In the lower panels are the the shields of the RAF and Suffolk Regiments.
To see more detail place your cursor over the highlighted panels in the window.