Zima had a relatively normal upbringing, he was born during soviet rule, but only four years after his birth the USSR broke apart, and Livonia gained it's independence and with that, many changes came.
He personally experienced a more western-leaning upbringing, with the recent independence and a wish to distance Livonia further from Russian Influence many more western practices were adopted, not just in terms of education but in terms of the general government, seeing this, Zima obviously had grown up to be quite happy for the freedom of Livonia's citizens, including himself.
It should be to no surprise that Zima, feeling the need to preserve that freedom ended up studying at the police academy in central Andrzejów, his studies went well and he was soon enough a standard patrol officer. Years into his career as a police officer in the Livonian Police Department, Zima decided to expand on his career and sign up for the riot task force, merely an extension of the police force but trained in riot drills and suppressing illegal gatherings.
Zima did this with the idea that, should a foreign influence present itself in Livonia once again, it could be suppressed and dealt with, this became particularly important during the events in Crimea in 2014, when Russia invaded and annexed it, the political turmoil and global heat rising, a growing fear of Russian expansion coming back to the Baltics once more.
At this point, Livonia had already joined the North Atlantic Treaty Organization, Zima was trained by other riot and police forces from other NATO members, including Poland, Germany and many others.
Zima was of course present when the outbreak in Chernarus happened, his unit was tasked with assisting in closing down the airports and keeping them under lockdown, detaining any and all flights coming from the eastern region, as things escalated over time and the tension rising further, suddenly catastrophe struck.
Three precision nuclear warheads were dropped in Lithuania, Russian forces were making a move, this would mark the beginning of the defence of the Baltics, and the conflict between NATO and the Russian Federation. During the conflict Zima was constantly shipped around where needed, keeping the populace on lockdown while the Livonian Defence Force fought bravely against the Russian Invaders in the east, but as all things tend to do during conflict, the safety of the land-locked nation began to crumble. Infected had escaped Chernarus, and were appearing in different spots internationally, and like many other nations, Livonia too failed to contain the outbreak.
It didn't take long, but the safety of what was once Livonia was now broken, a former shadow of itself, and Zima knew that very well, yet he still to this day roams the old Nádbor region, assisting those he can.