Many were killed in airstrikes on missile and drone units, the reports suggest, with the Revolutionary Guards, Basij forces and anti-riot police units sustaining the heaviest casualties.
No official figure on armed forces casualties has been released.
The information also suggests authorities have sought to limit public awareness of the losses by restricting public funeral and burial ceremonies. Families have reportedly been told to hold mourning services privately.
The reported toll comes as signs of dissatisfaction, declining morale, financial strain and desertions are said to be spreading among parts of Iran’s security and military forces.
Members of police special units received a notice on Friday indicating that salary payments for some units had been disrupted, according to information obtained and reviewed by Iran International.
In response to the announcement—said to be the third such delay in recent months—some personnel declined to attend pro-government rallies, and sources said deployments in some major cities were affected.
Reports received by Iran International also indicate that retirees and some army personnel have not received salaries for a second consecutive month.
Some senior commanders are said to accuse the IRGC of exploiting the financial crisis at Bank Sepah to weaken the police while strengthening other institutions, particularly those linked to the clerical establishment.
Additional reports suggest the IRGC has sought to address manpower shortages by recalling certain retirees to active duty and encouraging some prisoners to cooperate with security forces with promises of amnesty.
In the air force, according to the reports, morale and operational readiness are low. Many pilots—particularly after the reported downing of a Yak-130 aircraft in an encounter with an Israeli F-35—are said to be reluctant to fly combat missions against Israeli or US forces.
Readiness levels are also reported to have declined.
At the same time, desertions within the police have emerged as a serious challenge for the authorities.
Some reports indicate that about 350 personnel left their posts at one base, while in some units the rate of absence or desertion has reportedly approached 90 percent.