Members of the Household Cavalry have swapped Horse Guards Parade for a restaurant kitchen in Covent Garden.
They have been helping staff at the Punjab Restaurant to prepare and deliver food for a local food bank.
Since March, the restaurant has produced more than 110,000 meals for people in need.
Amrit Maan, the restaurant owner, was determined to put it to good use when the first national coronavirus lockdown started in March.
"The dining section was closed but not the kitchen. I refused," he said.
"I thought 'let's cook' and I collaborated with a number of homeless charities in lockdown one and now lockdown two... it’s been a crazy hardworking lockdown."
One of the Covent Garden Food Bank's trustees, Sue Vincent, said: "We never thought we'd be where we are at this time of year, just before Christmas, feeding so many families that are going hungry.
"It's fantastic to see the Army here, helping us."
As well as supporting the food bank, the restaurant provides wraps for the homeless four times a week.
For the Household Cavalry, which was involved with COVID-19 testing during the initial lockdown, they are enjoying the culinary challenge.
Trooper James Tolley said: "As long as it's helping people out in its own little way, we're happy to do it."
The restaurant has now launched a funding page to help with the costs of raw ingredients.