Following attendance at Sandhurst Brig Stefan Crossfield was commissioned in to the Royal Electrical and Mechanical Engineers (REME in 1992. As a subaltern he served in Bosnia, Macedonia and Kosovo. Following these operational tours, he returned to the UK to serve with 7 Bn REME where he was selected for promotion to Maj and moved to become an instructor in Aborfield.
Selection for ACSC 9 saw Brig Crossfield move to Shrivenham and study for a Masters degree before Staff College, after which he was selected for sub-unit command in 4 Close Support Battalion REME in Bordon. During this tour he deployed for an extended period to BATUS on the safety staff and commanded an ES Company on Op HERRICK 6. From sub-unit command, Brig Crossfield moved back to Shrivenham to join the staff course directing staff. During this assignment he was selected as XO of a teaching division and subsequently promoted to Lieutenant Colonel. His initial assignment as a Lieutenant Colonel was as the Force Development lead for Director Electrical and Mechanical Engineers (Army). Entering the FD arena at a time of unprecedented change saw Brig Crossfield move to work for Director Force Development ahead of the SDSR and then join the core Army 2020 team for 10 months working for General Carter.
Brig Crossfield took command of 6 Armoured Close Support Battalion REME in 2012 just before Op HERRICK 18. On his return he was selected for promotion to Colonel and temporarily acted as DCOS 3 (UK) Division.
Brig Crossfield’s has more recently delivered the narrative describing the military offer as COS to DPers and completed an Academic External Placement at Exeter University securing an MBA with Distinction in 2018. He served as DACOS YELLOWHAMMER in Jan 2019. Completed a short tenure as DACOS Current Plans in Home Command and upon promotion to Brigadier, joined Army HQ as Head Information Exploitation (Hd IX) in late 2020. As Hd IX, Brig Crossfield also fulfils the role of Chief Data Officer (CDO) for the British Army.
NIHR Clinical Research Network
Motor Oil Hellas Corinth Refineries SA
BCG - Boston Consulting Group
Waygate Technologies, a Baker Hughes business
Dept of Navy USMC
The British Army
HGC Global Communications
Notting Hill Genesis