The Army plans to slash and reinvest $25 billion in its budget over the next five years as part of a new “renaissance” of the service, Secretary Mark Esper said on Monday.

The savings will come from programs equipping the service, according to Esper, but the secretary declined to go into detail because the plans are part of the Army’s upcoming and unreleased fiscal 2020 budget.

“That dollar figure is a low end,” Esper said during the annual Association of the U.S. Army conference in Washington.

The Pentagon plans to send the budget request to Congress in February, where lawmakers would have to approve the Army’s cost-savings proposal.

“Priorities are priorities and hard choices must be made. I can’t tell you how many times someone has said to me, ‘Don’t eliminate that program it’s only $10 million,’ or ‘Don’t cut that office it’s only 15 people,’” Esper said. “You know what though? By going after the nickels and dimes, we’ve freed up over $25 billion and countless personnel billets that we will put back into building readiness and modernizing the Army.”

The savings may be only the beginning as Esper and Gen. Mark Milley, the Army chief of staff, comb through the service’s spending and attempt to overhaul how the Army recruits and trains soldiers, develops and buys weapons, and fights modern wars.

“The chief and I spent 40, 50, 60 hours going through program after program after program after activity after activity to look at each one and assess it and ask ourselves is this more important than a next generation combat vehicle, is this more important than a new squad automatic weapon, is this more important than long-range precision fires?” Esper said. “So, we had to make those tradeoffs and it resulted in reductions and cancellations and consolidations.”

Army manning and training are next in line for potential cost cutting that can be plowed back into new priorities, he said.

The reductions are part of a new routine that the service will continue, Esper said.