A classified report on the deadly attack in Niger last fall found that disregard for the chain of command and a rush to approve a mission were contributing factors to the deaths of four U.S. soldiers, The Wall Street Journal reported Thursday.

The 6,000-page report says that low-level commanders at U.S. Africa Command, eager to hit at local militant groups, took risks to get operations approved, officials familiar with the report told the Journal.

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In one case, at least one officer copied and pasted orders from a different mission into the new mission’s concept of operations to get the plan approved.

The copied orders are only one of a series of missteps detailed in the report, which also describes a disregard for military procedures.

The report, however, reportedly doesn’t recommend punishment for anyone.

The report also doesn’t blame increased decision-making power given at lower levels. That change, directed by President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE after recommendations from 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, came last year.

The investigation follows the October attack near Tongo Tongo, a village in a remote area of Niger. About 12 U.S. soldiers and 30 Nigerien soldiers were on a mission to meet with local officials — but it was then switched to a plan to search for an associate of forces aligned with the Islamic State in Iraq and Syria.

Despite U.S. intelligence assessing a low possibility of enemies in the area, the group was ambushed by about 50 attackers. Four U.S. service members and five Nigerien soldiers were killed.

Defense officials this week are briefing family members of the four slain soldiers on the report, which has taken months to complete and includes testimony from dozens of individuals, maps, diagrams and even video taken from soldiers’ helmet cameras.

A classified version of the report has been provided to Congress, which will receive briefings on it from top Pentagon officials.

The House Oversight and Government Reform Committee and the House Armed Services Committee are both planning hearings on the Niger mission.

Armed Services Chairman Mac Thornberry William (Mac) McClellan ThornberryTrump payroll-tax deferral for federal workers sparks backlash Overnight Defense: Woodward book causes new firestorm | Book says Trump lashed out at generals, told Woodward about secret weapons system | US withdrawing thousands of troops from Iraq Top Armed Services Republican 'dismayed' at Trump comments on military leaders MORE (R-Texas) on Thursday criticized a leak of the report’s details ahead of family members being briefed.

“There are a number of important oversight issues related to the ambush of U.S. forces in Niger and America’s military posture in Africa,” he said in a statement.

“However, it is deeply troubling that individuals with access to the report chose to leak details of the investigation before families of the fallen could be fully briefed. To me, that is an unconscionable breach of faith with the families of our warfighters and perhaps a violation of law.”

Thornberry added that he has directed the committee’s staff director to start an inquiry to make sure that the leak did not come from his committee and urged his fellow chairs with access to the report to do the same.

The report also includes military-wide directives from Mattis on training guidance, operational discipline and reinforcing already-established protocols within the chain of command. The officials said these were to help reduce the chances of another similar incident.

Mattis will also specifically give the Army, Special Operations Command and U.S. Africa Command about 10 “primary directives.” The groups will then have four months to show they are trying to fix the issues found in the report.

There are about 6,000 U.S. troops in Africa, including 800 in Niger.