View source for O'Callaghan Captain

{{personnel
|Surname and forenames=O'Callaghan
|Army number=Not yet known.
|Rank=Captain.
|Decorations=None known beyond Service Awards.
|Date of birth=Not yet known.
|Age=(At time of death).Not yet known.
|Unit=.
|Company/Battery=Not yet known.
|Platoon or other sub-unit=Not yet known.
|Task or role=
|Joined Brigade=
|Promotions=None known.
|Wounded=Not as far as is known.
|Prisoner of War=Not as far as is known.
|Died/Killed in action=Date of death not yet ascertained.
|Home address= (To include family and marital details where possible).  No details available as yet.
}}