View source for Battle of Frontier Day

{{M118}}{{Battle Infobox
|name= Battle of Frontier Day
|image=
|image size=
|image text=
|date= Frontier Day 2401 <br> 240107.15 – 
|location= Sol System, Sector 001
|result=Federation victory
|belligerent 1= {{plainlist|
* {{emblem|United Federation of Planets}}
** {{emblem|Starfleet}} }}
|belligerent 2= {{emblem|Borg Collective|link=Borg}}
|commanders 1= {{plainlist|
* {{emblem|Federation|text=President Anton Chekov|link=no}}
* {{emblem|Starfleet|text=Fleet Admiral Elizabeth Shelby|link=no}} <small>(KIA)</small>
* {{emblem|Starfleet|text=Admiral Jean-Luc Picard|link=no}}
* ''[[#Order of Battle|others]]''}}
|commanders 2= {{emblem|Borg Collective|text=Borg Queen|link=no}} <small>(KIA)</small>
|units 1= {{plainlist|
* Earth Spacedock
* Individual ships}}
|units 2= {{plainlist|
* Borg Queen's Cube
* Assimilated Starfleet
* A group of [[Changeling]]s}}
|strength 1= {{plainlist|
* 1 space station
* Hundreds of crew }}
|strength 2= {{plainlist|
* 1 Borg Queen's Cube
* Hundreds of starships
* Thousands of assimilated Starfleet crewmembers
* Unknown number of drones and Changelings}}
|losses 1= TBA
|losses 2= TBA
}}
{{Frontier Day attacks}}
{{UC}}
: ''This is an [[In Character|IC]] article about the battle. For the wider event and the [[blockbusters|fleetwide blockbuster]], see [[Frontier Day]].''

The '''Battle of Frontier Day''' was fought between the [[United Federation of Planets]] and the [[Borg|Borg Collective]]. The most recent conflict in the Borg-Federation war and the Galactic War with the Borg, the battle took place in Sol System on the Frontier Day of 2401. That year, much of the Starfleet had gathered to the Federation capital world Earth to celebrate the 250th anniversary of the launch of the ''Enterprise'' (NX-01), a symbolic beginning of the Federation Starfleet. The Borg used the vulnerabilities of the Fleet Formation System, caused or discovered by a group of Borg-affiliated Changeling infiltrators, to gain control of Starfleet ship. The Changelings introduced new genetic code to the Starfleet transporter architecture, causing a large portion of Starfleet crew to be assimilated by the Borg remotely and simultaneously. The Borg forced the assimilated crew to try to eliminate the unassimilated personnel.

== Background ==
The Frontier Day is a Federation, or more specifically, Starfleet holiday celebrated on the date of the launch of the ''Enterprise'' (NX-01) in 2151. The 250th occasion of the event was celebrated by Starfleet with a fleet gathering and a technology demonstration around the Sol Station at Earth's orbit.<ref name="Frontier Day - Part 2">[https://sims.starbase118.net/single/Artemis/-O1nQF_irZnYeBIZqF89 Frontier Day - Part 2], Cpt Addison MacKenzie, {{USS|Artemis|A}}, 240107.15</ref> 

The Borg and the Federation had fought several times since official first contact in [[2360s|2365]]. The most notable battles were those of the Battle of Wolf 359 in 2367 and the Battle of Sector 001 in [[2370s|2373]]. In 2378, the crew of the USS ''Voyager'' managed to escape the Borg, causing massive damage to the Primary Collective in the Delta Quadrant.<ref name="Borg history">[[MA:Borg history|Borg history]], Memory Alpha</ref> Since then, contacts between the Delta Quadrant Collective and the Federation have been sparse. The Federation has occasionally fought or collaborated with secondary or independent collectives or liberated drones, including the assimilation of {{USS|Nimitz}}<ref>[https://sims.starbase118.net/single/Ops/-1595735631000 A Ghost from the Past], FlCpt Sal Taybrim, [[StarBase 118 Ops]], 239707.26</ref> and the alliance formed aboard USS ''Stargazer'' in 2401.<ref name="Borg history"/> The notable conflicts with what may be the Delta Quadrant Collective include [[Omega One (Apollo)|the battle]] fought between Borg cubes and {{USS|Apollo}} in 2391.<ref>[https://sims.starbase118.net/single/Apollo/-1397538947000 This is it...], FlCpt Andrus Jaxx, {{USS|Apollo}}, 239104.15</ref>

Changelings...

Picard...

== Prelude ==
Changeling infiltrations...

''Titan'' hunt...

''Artemis'' encounters the Cube...

== Order of Battle ==
Just before the beginning of the battle, Starfleet forces consisted of hundreds of ships.<ref>[https://sims.starbase118.net/single/Amity/-O1rE688c-d4uKI2Yv0c The Longest Day Begins], Cpt Roshanara Rahman, [[Amity Outpost]], 240107.15</ref> All these ships were taken over by the Borg as the battle began, although the Federation forces managed to regain control over some of them temporarily or permanently. Some of the Starfleet ships present at the beginning of the battle include the following:

* [[USS Artemis-A|USS ''Artemis'']] (NCC-81287), {{c|Luna}}, commanded by Captain [[Addison MacKenzie]].
* {{USS|Astraeus}} (NCC-70652), {{c|Galaxy}}, commanded by Captain [[Mei'konda]].
* {{USS|Chin'toka}} (NCC-97187), {{c|Akira}}, commandeered by Commander [[Serala]].
* {{USS|Cambridge}}<ref>[https://sims.starbase118.net/single/Artemis/-O2VgRrl_V-li-yaBMLF Like Seeing a Ghost], Lt Nathan Richards, {{USS|Artemis|A}}, 240107.23</ref> (NCC-79579), {{c|Duderstadt}}.
* USS ''Enterprise'' (NCC-1701-F), {{c|Odyssey}}, commanded by Fleet Admiral Elizabeth Shelby.
* USS ''Excelsior'' (NCC-42037), {{c|Excelsior II}}, commanded by Captain Benbassat.<ref>[https://sims.starbase118.net/single/Artemis/-O2LSsXH_u6k-uHeWI1V Firing Squad], Cpt Addison MacKenzie, {{USS|Artemis|A}}, 240107.21</ref><ref>[[MA:USS Excelsior (NCC-42037)|USS Excelsior (NCC-42037)]], Memory Alpha</ref>
* {{USS|Kitty Hawk}} (NCC-71863), {{c|Galaxy}}, commanded by Captain [[Roshanara Rahman]].
* USS ''Magellan''<ref name="Frontier Day - Part 2" /> (NCC-86509), {{c|Inquiry}}<ref>[[MA:USS Magellan (NCC-86509)|USS Magellan (NCC-86509)]], Memory Alpha</ref>
* USS ''Pulaski''<ref name="Frontier Day - Part 2" />
* USS ''Titan''<ref>[https://sims.starbase118.net/single/Astraeus/-O1nQFmyLr0IK31xHuII Assimilation], Cpt Mei'konda, {{USS|Astraeus}}, 240107.15</ref> (NCC-80102-A). Initially commanded by Captain Liam Shaw. Carried Admiral Jean-Luc Picard.<ref>[[MA:USS Enterprise (NCC-1701-G)|USS Enterprise (NCC-1701-G)]], Memory Alpha</ref>

In addition, the Sol Station (also known as Earth Spacedock) took part in the battle. The control of the Sol Station remained under the Federation control.<ref>[https://sims.starbase118.net/single/Chintoka/-O2SxLjWPdqfk7aovgRD I have a plan. I hope.], Cmdr Serala, {{USS|Chin'toka}}, 240107.23</ref>

Enterprise-D...

Borg Cube...

== Battle ==

== Aftermath and impact ==
Destruction of the Collective...

Attacks in the Alpha Isles and the Marchlands...

Rebuilding...

== References ==
<small><references /></small>

== External links ==
* [[MA:Battle of Frontier Day|Battle of Frontier Day]], Memory Alpha
* [https://memory-beta.fandom.com/wiki/Battle_of_Frontier_Day Battle of Frontier Day], Memory Beta

{{Battles}}
[[Category:Conflicts]]