'1st Mids'
56th (London) Divisional RE
101 (London) Field Engineer Regiment
1st Middlesex Engineer Volunteers
47th (2nd London) Divisional RE
1st Middlesex Engineers
Field engineers
Colonel Norman MacLeod of MacLeod
Lieutenant-Colonel Sydney D'Aguilar Crookshank
Lieutenant-Colonel Christopher Thomson
military unit
військова частина
Helmet Plate of the 1st Middlesex Engineer Volunteers