Jackson has been trying to come back from a torn anterior cruciate ligament that he suffered in the 15th game of the 2009 season. Herremans has been dealing with a sore foot.
Jackson and Herremans did limited work in the morning practice and were given the afternoon practice off. Still, it was a good sign for both players, especially Jackson, to be back on the field.
"It was good to get out there and get some coaching from (offensive line coach) Juan (Castillo) and some individual periods banging a little bit with my teammates," Jackson said, according to the Eagles' official Web site. "But ultimately the goal is to get out there and be worry free."
"We'll have to see how it goes," Reid said. "We're only one day, one practice into it. Is (Jackson) ahead of schedule? Yes, I would say that."
A torn ACL can keep a player out for 10 months to more than a year. Jackson was back on the field in less than eight months.
"I'm not real surprised," said Jackson, who had started 76 consecutive games before the injury. "I haven't had any setbacks, and things have gone well in rehab. Dr. (James) Andrews has a plan in place for me, and the plan is to add a little bit more each day and see how it goes. My ultimate goal is still to be ready for opening day (Sept. 12 against the Green Bay Packers)."
Herremans, who missed the start of the 2009 season with the same injury, was held out of the final minicamp this spring and the first 18 days of training camp, including Friday's preseason opener against the Jacksonville Jaguars.
"It was tough missing the start of the season last year," Herremans said. "I'd rather be out now than during the season."
Reid said he would like Herremans to play in at least one of the three remaining preseason games, most likely Aug. 27 at Kansas City. But, again, nothing's certain.
"We're going to go nice and easy with Todd," Reid said. "You would like to get him in a game in preseason. If he didn't, I'd still think he'd be OK (for the opener). He's a veteran player, but it would be good just to get him up to speed."
Herremans is fine however it works out.
"I'd like to get in a game now," he said. "But if I don't, it's not the end of the world."
For Jackson, it's like a fresh start.
"It's been a long time," the center said. "It was good to get out there and move around a little bit, snap a football again, bang around with my teammates and just shake off the rust.
"I still think about the last snap when I got hurt. I think about it every day. At some point, I'm going to have to stop and start thinking about this season."
Notes: Safety Quintin Demps, who hurt his knee during Friday's game, has a contusion and should be back on the field soon, Reid said ... Safety Antoine Harris has a LisFranc sprain in his foot and was placed on injured reserve, ending his season.
The Associated Press contributed to this report.