WASHINGTON — Since the Afghan peace talks collapsed last weekend, President Trump has repeatedly said that the American military was striking the Taliban harder than it has for a decade, or even since the start of the war in 2001.

“We have been hitting our Enemy harder than at any time in the last ten years!” the president tweeted on Monday. He said it again, and even more forcefully, on Wednesday as he commemorated the Sept. 11, 2001, attacks at the Pentagon. “The last four days, we have hit our enemy harder than they have ever been hit before, and that will continue,” Mr. Trump said.

But the president, the military’s Central Command and the American-led mission in Kabul have offered no statistics to back up the statements. A survey of the scope of military operations over the course of the 18-year war seems to indicate that, at best, the president is exaggerating the pace of current operations, even if they have increased in recent weeks to counter the uptick in Taliban attacks across Afghanistan.

The American military has not specifically disputed the statements by the commander in chief. For example, Gen. Kenneth F. McKenzie Jr., the Marine four-star general in charge of the military command that oversees operations in Iraq and Afghanistan, seemingly propped up Mr. Trump’s comments this week. General McKenzie told Reuters that the military was most likely increasing attacks on the Taliban after the collapse Saturday of what was nearly a peace agreement between the United States and the insurgent group.