"We were among them and the numbers of Qataris on the ground were hundreds in every region," said Qatari chief of staff Maj. Gen. Hamad bin Ali Al-Atiya.
The announcement marks the first time Qatar has acknowledged it had military boots on the ground in Libya.
Previously the country said it had only lent the support of its air force to NATO-led operations to protect civilians during the eight-month uprising.
Speaking on the sidelines of a meeting in Doha of military allies of Libya's National Transitional Council (NTC), Al-Atiya said the Qataris had been "running the training and communication operations."
"Qatar had supervised the rebels' plans because they are civilians and did not have enough military experience. We acted as the link between the rebels and NATO forces," Agence France Presse quoted Al-Atiya as saying.
Libya's interim leader Mustafa Abdel Jalil told the meeting that Qatar had been "a major partner in all the battles we fought."
He added that the Qataris had "planned" some battles.
Al-Atiya also said that after the departure of NATO troops, a new international coalition led by Qatar would oversee "military training, collecting weapons and integrating the rebels in newly established military institutions."
