Battle of Phase Line Bullet
The Battle of Phase Line Bullet was one of the clashes which led to the destruction of the Tawakalna Iraqi Republican Guard Division, on the 26 February 1991, by a simultaneous attack of the 1st and 3rd armoured divisions, the 1st Infantry Division, and the 2nd Armoured Cavalry Regiment.

The battle was one of the rare examples of an American armoured force being repulsed by a screen of Iraqi entrenched infantry, APCs, and Iraqi T-72 tanks during Desert Storm. The incident also involved American friendly fire casualties.

Background
The initial skirmishes between American and Iraqi Republican Guard units took place earlier that day around pre-established line 73 Easting, some 30 miles west of  Wadi al Batin, where the 2 ACR managed to destroy two Iraqi armoured brigades. The skirmishes in this sector were still going on when the 3rd Armoured Division, positioned north, made the first contact with a brigade of the Tawakalna Armoured Division around 03:30pm.

Weather conditions were extremely poor, hampering visibility and identification of targets.

Flank screen maneuver
As the usual practice for armored reconnaissance, a troop of M3 Bradleys (Alpha Troop), belonging to the 4th  Squadron of the 7th Cavalry Regiment, was scouting ahead of the main tank force.
The flank screen maneuver took place along the southern boundaries between the 2 ACR and 3rd Armored Division operational areas. Task Forces 4-34 and 4-32 were advancing from the rear. The general movement of the US forces followed an eastward direction. The fumes from hundreds of oil wells set on fire by the Iraqis, combined with an intense shamal, forced the US vehicles to use thermal sights.

Surprising contact
At 03:00pm, the reconnaissance troop of 14 Bradleys received information from the GHQ of the 3rd Armoured Division that no enemy unit remained between them and the Kuwaiti border. Suddenly, they found a screen line of Iraqi APCs straight ahead, barely  to the east. The poor weather, along with burning oil fumes, reduced the visibility conditions to almost zero. The enemy screen line was part of the 9th Armored Brigade of Tawakalna Division. 

A burst of small-arms and heavy machine gunfire, RPGs and Sagger missiles erupted.  Initially, the American commander thought they were engaging dismounted infantry supported by BMPs, but later he realized that they were also receiving main-gun tank rounds. The US vehicles retaliated by firing TOW missiles, 25 mm cannon and machine guns. The contact lasted for about two hours, until the Bradleys, battered by enemy and friendly fire and running out of ammunition, were forced to withdraw.

American M1 Abrams tanks from TF 4-34, positioned in the rear echelon, fired in support of the IFVs, destroying at least one T-72 and several Iraqi APCs. They also hit three Bradleys (A-24, A-31 and A-22), causing two American deaths. The 2 ACR also became entangled in the fighting from the rear right.

Another Bradley (A-36) was first disabled by a 12.7 mm round from an NSVT heavy machine gun which penetrated the transmission and later shattered by a large caliber shaped charge impact in the turret's front. Bradley A-35 also took some damage from a mix of ricocheting 12.7 mm bursts and indirect fire, but was able to drive out, while A-33 suffered two injured and its radio station hit by 12.7 mm fire. During the process of rescuing casualties from A-24, Bradley A-26, commanded by Sergeant Major Ronald Sneed, was near-missed by a T-72 main round, which spattered the vehicle with splinters. While providing cover for A-21 who was attempting to assess the situation with A-36, Bradley A-22, commanded by Staff Sergeant Meyers, was struck in the turret by an M-1 tank from TF 4-34, killing one of the crew. The gunner of A-24 was also killed by a tank round fired by a friendly tank.

The disabled A-22, A-36 and A-24 were left abandoned on the battleground, while A-31, although heavily damaged, was able to pull back. All the remainder Bradleys were raked by machine gun fire and shell splinters, but they remained operational.

Aftermath
American forces were unable to find a breach in the northern Iraqi lines until the first hours of  February 27. That morning, 7th Cav scouts found the hulls of 18 APCs, mostly BMP-1s, and six T-72s disabled or abandoned by their crews. The clash is one of the few recorded actions where an American assault was repulsed by dug-in Iraqi armour. The commander of Alpha troop, Captain Gerald Davie, later acknowledged that "we were ten times too close to the enemy than we would choose to be".