The size of the UK Army is expected to be reduced by about 10,000 soldiers as part of a move towards robots, drones, and cyber warfare.
The defence review is likely to see the loss of some tanks and aircraft – but the government said there would be “more ships, submarines and sailors”.
Numbers in the regular Army will be reduced to about 70,000 soldiers, having already fallen in recent years.
Defence Secretary Ben Wallace will make a statement in the Commons later.
On Sunday, he told BBC One’s Andrew Marr Show he was making decisions in the context of an increased defence budget.
But Labour said the number of soldiers was being cut despite an increase in threats facing the UK.
Prime Minister Boris Johnson said overhauling the armed forces would make them “more valuable” to the UK’s allies and act as a deterrent to the nation’s “foes”
