Northern Offensive (Post Ukraine War)

Northern Offensive known in Russia as the Northern Defensive Strategic Operation (Russian: Северная защитная стратегическая операция, Severnaya zashchitnaya strategicheskaya operatsiya) was one of NATO's main military offensives in its invasion of Russia. It was carried out from Finland and the Baltics, and involved a NATO coalition consisting mainly of forces from the Baltic and Nordic states, with some aid from the western powers of the United States and United Kingdom as well as pro-NATO Russian Free Army, or RFA. However after the Irish re-unification and the dissolution of the United Kingdom, the succeeding Britain continued to support NATO.
The offensive occurred on all three: aerial, naval and ground battles, with NATO first focusing on destroying the Baltic and Arctic Fleets of the Russian Navy. After that was accomplished, preparations were made for the ground invasion. In spite of a stiff and stubborn Russian resistance, and significant damage done against invading NATO forces, the country's World War II victories were not emulated, and Saint Petersburg ultimately ended up falling to NATO. 
However, much of the credit also belonged to the pro-NATO "Russian Free Army". Loyalist forces either surrendered, or retreated for the final defense of Moscow. Saint Petersburg was used as an invasion base to establish a bridgehead in northern-central European Russia, to which shortly after, the Moscow Offensive began.
== Russian defensive operations ==
=== Aerial operations ===
According to military statisticians, the Russians employed in total, 140 fighter aircraft, though other estimates put it lower or higher, at around 130 to 155. The Russians mostly employed the MiG-Fulcrum 29s, updated with AI technology, wiith Sukhoi Su 22s, 27s and a couple 35s forming the rest. It was confirmed that 15 Su-57s were recovered from the wreckage. NATO leaders were "thankful" that Russia did not have a massive fleet of Su-57s, as NATO leaders did confirm of the Su-57's superior abilities.
Thanks to being severely outnumbered, outproduced, the aerial operations were limited to harrassing attacks against enemy supply lines, without much involvement in dogfights as Russian leaders knew they would get obliterated in such fronts.
Around 600 drones were successfully deployed by the Russians, who performed devastating attacks against NATO, however the latter still outproduced the Russians, allowing them to emerge victorious. 
=== Ground operations ===
This is where the Russians performed at their greatest, and were notorious for their house-to-house fighting skills. NATO soldiers often avoided fighting house to house against the Russians. As for the tank forces, most were made up of aging Soviet tanks dating up to the early Cold War. Surprising, a large number of Russia's tank fleet was updated with night-vision and AI technology radars, allowing them to perform exceptionally well during night duels. The well-performance of Russia's tank fleets were a stark contrast to Ukraine, and stunned NATO, however it was not enough to emerge victorious over NATO. Ground operations were also aided by drone technology.
Again, due to production shortages, Russia was still outnumbered at what would have been considered, their greatest field avantage, with 1,100 tanks at most being employed by Russia. Only 170 tanks were reported to have been remaining in service at battle's end, which were transferred to Moscow for the final battle, and the rest being captured by RFA soldiers.
Approximately 1,200 military personnel surrendered, however paramilitary units continued to fight the NATO soldiers, until the remaining, up to 2,100 paramilitary fighters finally surrendered. The rest of military and paramilitary not present retreated into Moscow.
=== Naval operations ===
Russia's Baltic Fleet was entirely decimated by NATO, and was mostly used to delay NATO's ground operations into Russian territory. "Evacuation Units" had already been established, fully-knowing that Russia's navy would be completely destroyed against NATO. However, its silent-water Yasen submarines were able to successfully sink many vessels used by NATO, but this was not enough. The Yasens successfully sank more than 25 NATO vessels.
=== Human rights abuses ===
After the war, leaders from both sides reported the use of Russian human waves, and human shields. During a time of desperation, Russian forces were arming civilians with anything, ranging from outdated World War II bolt actions, to farming equipment. In both the government military and paramilitary, they referred to as "Sacrificial Battalions", and in the worse and most pegorative of cases, "Untouchable Battalions", consisting of unemployed, disabled, prisoners, felons and etc. Of the paramilitary forces, as much as 3,530 people were reported to not have been armed with military weapons, or armed at all. This became an impetus for these former paramilitary to join the Russian Free Army, and in general - having many civilians switch sides and joint NATO. 
== RFA operations ==
The Russian Free Army performed half of the fighting, with RFA general Gennady Babayev agreeing with NATO to provide significant manpower, while NATO supplies the RFA. The RFA was reported to have operating 107 NATO tanks, 57 captured Russian military tanks and operating on $1.2 billion worth of NATO equipment - being present at all of the battles. However, the RFA was mostly proficient and used in sabotage and espionage operations. 
Afterwards, as NATO forces were moved in for the Moscow Offensive, the city of Saint Petersburg's control was transferred mostly to the officers of the RFA.