The event, which will be filmed live by the BBC, will take place in a rural location with challenging access and with a setup that will be more time consuming than a classic event venue.
In addition to families of soldiers, the event will include guests from the armed forces and international figureheads.
Due to the nature of the event, it any potential events agency must be multi-lingual in English/French/German/Flemish.
The contract is set to begin on 6 January and run to the beginning of August next year.
DCMS has noted that the contract may be suitable for SMEs and the deadline for submitting a tender or request to participate is 18 November.