A group of Senate Democrats is demanding answers from the Pentagon on the estimated cost and amount of time spent to put together a military parade that President Trump Donald John TrumpObama calls on Senate not to fill Ginsburg's vacancy until after election Planned Parenthood: 'The fate of our rights' depends on Ginsburg replacement Progressive group to spend M in ad campaign on Supreme Court vacancy MORE has requested.

The senators sent a letter to Defense Secretary James Mattis James Norman MattisBiden courts veterans amid fallout from Trump military controversies Trump says he wanted to take out Syria's Assad but Mattis opposed it Gary Cohn: 'I haven't made up my mind' on vote for president in November MORE on Wednesday questioning the impact such a parade would have on taxpayers and how it would affect the military in the midst of the 17-year war in Afghanistan.

"At a time of war, with American service members serving in harm’s way, such a parade seems to be inappropriate and wasteful," the Democratic lawmakers wrote in the letter.

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"Every penny of the millions of dollars that the parade would cost and every second of the tens of thousands of personnel hours its execution would require, should be devoted to the most essential missions of the Department of Defense – protecting the American people and our security interests."

The letter was sent by Senate Armed Services Committee ranking member Jack Reed John (Jack) Francis ReedWhen 'Buy American' and common sense collide Hillicon Valley: Russia 'amplifying' concerns around mail-in voting to undermine election | Facebook and Twitter take steps to limit Trump remarks on voting | Facebook to block political ads ahead of election Top Democrats press Trump to sanction Russian individuals over 2020 election interference efforts MORE (R.I.), Senate Appropriations Committee Defense Subcommittee ranking member Dick Durbin Richard (Dick) Joseph DurbinMcConnell focuses on confirming judicial nominees with COVID-19 talks stalled Senate Republicans signal openness to working with Biden Top GOP senator calls for Biden to release list of possible Supreme Court picks MORE (Ill.) as well as Sens. Gary Peters Gary Charles PetersBiden promises Democratic senators help in battleground states Postal service changes delayed 7 percent of nation's first-class mail: Democratic report GOP votes to authorize subpoenas, depositions in Obama-era probe MORE (D-Mich.) and Patrick Leahy Patrick Joseph LeahyBattle over timing complicates Democratic shutdown strategy Hillicon Valley: Russia 'amplifying' concerns around mail-in voting to undermine election | Facebook and Twitter take steps to limit Trump remarks on voting | Facebook to block political ads ahead of election Top Democrats press Trump to sanction Russian individuals over 2020 election interference efforts MORE (D-Vt.).

Mattis earlier on Wednesday dodged questions on the cost of a military parade, which Trump reportedly requested during a Jan. 18 meeting between himself and top generals in the Pentagon’s tank, a room for top secret discussions.

“I think we’re all aware in this country of the president’s affection and respect for the military. We’ve been putting together some options. We’ll send them up to the White House for decision,” Mattis told reporters at the White House.

The Senate Democrats, however, want more concrete answers by Feb. 23, including the anticipated total budget for the parade, the routine Defense Department training, operations or functions that would be impacted, the total hours needed to plan and execute the event and how the parade's costs would rank compared to annual unfunded requirements.

The lawmakers also expressed concern over the reports that Trump directed ‎the Pentagon to deliver the parade during discussions in the tank "during what should have been a discussion of the impact of budget negotiations on the Department."

Trump has long expressed a desire for a display of the nation's military’s might in Washington, including publicly musing about such an event after witnessing Bastille Day celebrations in France last summer.

The president reportedly wanted to include tanks and missile launchers in his inauguration parade last year, and he has also considered a military parade for the Fourth of July.

Numerous lawmakers on both sides of the aisle have since spoken out against such an event, saying it wastes valuable time and dollars during a period of already constrained budgets. Others have criticized the optics, saying it evokes Soviet Union- and North Korea-style displays.