Mexican prosecutors have decided not to indict the ex-defense chief.
His arrest came as another former high-ranking Mexican official faces drug trafficking charges in U.S. District Court.
Estimates are up to 1,000 veterans are exiled in Mexico.
The nation’s armed forces are now involved in everything from construction of government projects to running tree nurseries.
The fighting happened on once Mexican land that now constitutes the cities of Pico Rivera, Montebello and Whittier.
Rebollar Gomez's son, 2nd Lt. Gibram Cruz is not allowed to travel to foreign countries without permission from the military.
Mexico's President Andres Manuel Lopez Obrador said there is "great cooperation" to fight drug trafficking.
The award is designated for troops who "encounter no foreign armed opposition or imminent hostile action."
Marine and Naval Criminal Investigative Service officials have not released any details on the pending charges.
One thousand Texas National Guardsmen will joint 1,100 active-duty troops on the border in the next several weeks.
Since 2001, the Alabama Army National Guard site has played a significant role in preparing soldiers for Afghanistan.
State police asked that anyone who may have witnessed the incident, or had cellphone video of it, to contact them.
DOD spokeswoman Susan Gough would not comment on what the images show.
Advocates and some lawmakers stress that the stars are aligned to pass significant legislation.
"He represented himself and our Army well through his calm, professional response to the situation -- I'm very proud of him."