- "West Texas native. Served with Army Rangers in Afghanistan, pre-post Iraq War. Discharged (Section 8) after failed rescue attempt of a teammate. Returned to Afghanistan as a PMC. Recruited by Alice to join the Demon Dogs."
- — In-game biography
Sergeant Wayne Dylan Davis, also known as D-Day, is a Demon Dogs operator of the Coalition faction featured in Call of Duty: Modern Warfare. D-Day is unlocked after completing the campaign level Hunting Party.
In May 2002, Davis passed the U.S. Army Rangers school and was deployed to Afghanistan the next month as part of Operation Enduring Freedom. He was later deployed to Iraq for Operation Iraqi Freedom where he fought during the First and Second Battle of Fallujah in 2004.
In 2009, Davis was redeployed in Afghanistan as part of the troop surge. For five years, he worked in extensive cooperation with Task Force Orange until Davis and "Alice" conducted an unsanctioned assault on a Taliban stronghold to rescue one Private Grayson Jeffries in 2014. Jeffries, who was in an intimate, but illicit, relationship with Davis, was captured during an ambush while under his command. Despite the pacification of the base, Jeffries was found dead. As a result, "Alice" was demoted and Davis was discharged under Section 8 and sent back to El Paso for mental trauma.
In March 2020, Al-Qatala's new leader Khaled Al-Asad launched an full-scale assault against Verdansk in Kastovia. Operators from Coalition and Allegiance were deployed to Verdansk to stop Al-Qatala as part of the Armistice initiative.
When Al-Qatala released toxic gas within Verdansk, Task Force 141 operator Simon "Ghost" Riley discovered a chaotic situation where the operators of Armistice, including D-Day, had turned against themselves and began targeting each other.
|Name||Rarity||Image||How to obtain|
|Open Season||Base||Complete the Hunting Party Campaign Mission|
|Sage Brush||Base||Complete the Hunting Party Campaign Mission|
|Fall||Base||Complete the Hunting Party Campaign Mission|
|Buckshot||Rare||Battle Pass Season One Tier 60|
|Arctic Ops||Rare||Operator Mission|
|Clipped In||Rare||Battle Pass Season Two Tier 40|
|Deep Pockets||Rare||Operator Mission|
|Demon Dogs D-Day||Rare||Bundle Demon Dogs Pack|
|Quick Draw||Rare||Battle Pass Season Three Tier 40|
|Lone Star Soldier||Epic||Operator Mission|
|Home on the Range||Epic||Operator Mission|
|Ambush||Epic||Bundle Escape Artist|
|Tailgate||Epic||Bundle The Texan|
|True Victory||Epic||Mountain Dew AMP Game Fuel 2019 promotion|
|Weekend Warrior||Epic||Bundle Fourth of July Pack|
|Call of Duty League Skins|
|Name||Rarity||How to obtain|
|Later Asshole||Base||Unlocked by default|
|Saved a Bullet||Common||Operator Mission|
|Eat and Die||Epic||Bundle The Texan|
|Kill for a Shower||Epic||Bundle Escape Artist|
|Need a Shirt||Epic||Unobtainable|
|Name||Rarity||How to obtain|
|Hatchet Hitman||Base||Complete the Hunting Party Campaign Mission|
|Spine Snapper||Epic||Bundle The Texan|
|Stick 'n' Knife||Epic||Bundle Outback|
|Universal Finishing Moves|
- D-Day's blood type is B+.
- D-Day has a vision of 20/19.
- D-Day's dossier is found in Operation Kuvalda.
- Cooperation between D-Day and Alice is surveyed and maintained. Any changes in this relationship is reported to identify for any potential weaknesses.
- When reviving a teammate, D-Day may shout, "Ain't no time to bleed! Come on!" This is a reference to an iconic line in the 1987 film Predator.
- D-Day's "Home on the Range" skin was previously named "Border War." This was changed by Infinity Ward in light of the real-life racial tensions during 2020 in the United States.
- D-Day's "Eat and Die" Quip is a reference to a signature phrase by the titular protagonist of the video game Duke Nukem 3D.