Military History

Theatre of War	Medals	Commonwealth War Grave of Memorial
Salonika	British War & Victory Medals	Doiran Memorial
Arrived in Theatre	Medal Citation (if app)	SWFHS Area Memorials
After May 1916	~	Welford on Avon
Action, Battle or Other Reason Killed	Date and Place Enlisted	Other War Memorials
Second Battle of Doiran	After 26 Apr 1916 at Stratford on Avon	~
Place of Death	Previous Regiments or Units
Doiran, Greece	~

Circumstances Leading to Death (Normally from War Diary)           

Frank is listed as Missing/Killed in Action on 25 Apr 1917. His remains were never recovered for burial.

Very little is available on the internet about the 9th Battalion, Gloucestershire's during the Second Battle of Doiran. War diaries for Macedonia/Salonika are not availble.

In general the British infantry began its attack on the night of 24–25 April. Twelve companies attacked the Bulgarian 2nd Brigade and, after a bloody fight, managed to take the "Nerezov," "Knyaz Boris," and "Pazardzhik" positions. After a Bulgarian counterattack, the British were repulsed with heavy casualties and, by 8 pm, had retreated.^[5] The British assaults on the right and central fronts were also repulsed with heavy casualties after help from the Bulgarian artillery. 

I have also found mention of a very heavy artillery barrage that killed other men of the 9th Battalion on the same day and it is likely that Frank was killed by that barrage.