Was picked up by CBS after being dropped by NBC for low ratings. It became a success soon afterwards.

During the last half of season eight, Catherine Bell was shown mostly behind a desk, or holding something in front of her, because she was pregnant. Her character pretended to be pregnant during the last couple of episodes of the eighth season, then threw away the padding during the season nine premiere, because Bell had given birth during the summer hiatus.

While Rabb and Lieutenant Loren Singer were at odds with each other in the show, in real-life, they are a couple.

The location for Admiral Chegwidden's house is the Peter Strauss Ranch, operated by the National Park Service in the beautiful Santa Monica Mountains National Recreation Area in Southern California, once owned by actor Peter Strauss.

Unused footage from movies like Top Gun (1986), Flight of the Intruder (1991), Clear and Present Danger (1994), and The Hunt for Red October (1990) (all movies from Paramount Pictures) was used in this television series (a Paramount Network Television production).

One episode was shot on the set of Crimson Tide (1995).

During Tracey Needham's time on the show, when wearing her ribbons, she was shown as wearing only the Meritorious Unit Commendation. She should also have been wearing the National Defense Medal, which had been authorized for all service personnel serving during the period August 2, 1990 to November 30, 1995. Tracey Needham first appeared as Lieutenant Junior Grade Meg Austin on September 30, 1995.

The one hundredth episode, "Boomerang, Part 1", marked the acting debut of Sam Worthington.

David James Elliott (Harmon Rabb, Jr.) appears in every episode of JAG, either as himself, as another character in a flashback, or via voice by phone. He is the only regular cast member to appear in all episodes.

The carrier bow, shown for about 1/2 a second at the start of each episode, is the U.S.S. Ranger (CV-61).

Nanci Chambers (Lieutenant Loren Singer) appeared as Harm's downstairs neighbor in season two, episode nine, "Washington Holiday", prior to becoming the character of Lieutenant Singer.

During its first season, the series was co-produced by NBC, in addition to Belisarius and Paramount. NBC obviously did not continue co-producing after the series moved to CBS, and CBS did not take over as a co-producer for NBC either. Though, such a move was made unnecessary by the 2000 merger of CBS and Paramount's parent Viacom. CBS and Viacom split again in 2006, and Paramount's television library, including "JAG", was retained by CBS.

When the series began, Harmon Rabb, Jr. (David James Elliot) was a Lieutenant. By the time the series ended, he was promoted to Captain, and was being transferred to London.

"JAG" stands for "Judge Advocate General". The office of JAG, is a part of the Navy, which according to their official website "provides legal and policy advice to the Secretary of the Navy in all legal matters concerning military justice, administrative law, environmental law, ethics, claims, admiralty, operational and international law, litigation and legal assistance."

When the series began, Bud Roberts (Patrick Labyorteaux) was an Ensign. When the series ended, he was a Lieutenant Commander. In the NCIS S13, he is a Captain

When the series began, Sarah MacKenzie (Catherine Bell) was a Major in the Marines. Shortly thereafter, she was promoted to Lieutenant Colonel, at which rank she retained until the series ended. In the last episode, she was being transferred to San Diego.

In many episodes, the screen types out the location and 'Zulu' time. 'Zulu' time is the same as GMT and is five hours ahead of Falls Church, Virginia time.

At the end of the last episode, Bud Roberts (Patrick Labyorteaux) flips a JAG coin, which was given to him by Admiral Chegwidden when the Admiral retired.

A lot of their submarine (underwater) footage is from either (or both) the movies The Hunt for Red October (1990) and Crimson Tide (1995). Also interesting, that since the show involves almost exclusively the F-14 Tomcat aircraft, in the last video portion of the opening credits, the aircraft performing maneuvers is clearly an F/A Hornet, or Super Hornet, like the Navy Blue Angels fly.

Towards the end of the series, Bud Roberts (Patrick Labyorteaux) was promoted to Lieutenant Commander; the ceremony was conducted by retiring Admiral Chegwidden.

The fighter jet, in which Rabb's dad sets him, during the flashback in the pilot, was an F-4 Phantom.

Numerous actors have appeared on this show and NCIS (2003), but in different roles. Notables include: Sean Murray, Muse Watson, Terry O'Quinn, Steven Culp, Michael Bellisario, and Joe Spano. These notables had a significant role in either this show or NCIS (2003), but not necessarily the other. For example, Sean Murray's roles on this show weren't recurring, while he is a regular on NCIS (2003), and Terry O'Quinn's role on this show was recurring, but wasn't on NCIS (2003).

Many episodes featured Patuxent River Naval Air Station and the city of Lexington Park. Both are real locations. Lexington Park is located right outside the Navy base in St. Mary's County, Maryland.

In one episode, it was revealed that Bud Roberts (Patrick Labyorteaux) lost his right leg in a mine accident.

In the pilot episode, A word can be seen on the side of the fighter that Rabb's dad sets him in. the word is "Hammer" was a call sign for Rabb's dad, since fighters have the names of the pilots on the side.

In seasons 2 and 3,the opening credits begin with a commentary, which explains that Rabb was originally an F-14 Tomcat pilot, and crashed during heavy seas, and after being diagnosed with night blindness, he joined JAG. The very first time this commentary is given (season 2, episode 1), Major MacKenzie is not mentioned.

In the pilot episode "A New Life". Harmon Rabb, Sr. was portrayed by David James Elliott but voiced by Richard Crenna. This scene was repeated in at least one subsequent episode.

Despite being on the air for ten seasons, and two hundred twenty-seven episodes, the show never had a female director.

Although some of crossovers happened after the end of the series, it places in the same universe that NCIS (2003), NCIS: Los Angeles (2009), Hawaii Five-0 (2010),NCIS: New Orleans (2014) and Scorpion (2014).