Ok, I'm very new. I didn't get into the guides until after I had practically built my village. I didn't know I had Quests to guide me in what to do first, second and so on. I began fighting in the provinces soon after I scouted them including my first one. I used the manual mode rather than trust a computer to play it. I should have negotiated most of them at first but I thought I should fight in order to save supplies. I began fighting and losing a lot of armies. I didn't understand that the 39 armies they had would clobber my 6 armies. I started developing a strategy where I would use one or two archers (this is beginning level archers) to run around behind obstacles and blast the enemy units until they were gone. Their number were so far over mine it took a while. Now I have 3 armories in level 3, a barracks training area in level 1 and my guys are up to 15 units. But I don't know how to rebuild my armies. I am running out of guys. I have 18.9 sword dancers, 7.3 Archers and 6.7 Treants. I am not even sure what all this means. From what I've read of this guide, I should not even have started fighting yet. I have wiped out all the Easy and all except one of the Medium Provinces around my village. So; where do I go from here?
We'll probably need a bit more info to help with details, but the first thing I'd do is take a breath and slow down, lol! This game is a marathon, not a sprint.
You get more troops by training them in the barracks. Click on the barracks and your training cue comes up. It will cost supplies to train troops, so you will not save supplies by fighting, but you will save on goods. You probably want to slow down on clearing provinces anyway if you're going for fighting over negotiating in the provinces. Look at the requirements to open the next chapter chest. You can go over that number a bit, but not a whole lot if you want the fights to be winnable with fewer troop losses. So, train troops while you wait on clearing provinces for now. Also, the 'advanced scouts' tech at the beginning of each chapter reduces the costs of negotiating and the difficulty of the battles in any province not yet scouted. So, take a look at how many provinces you need to clear to finish the chapter you are in. You'll have to scout and complete those before you can open a chest to reduce the rest. Hold off on scouting more until you can open the next 'advanced scouts' tech. Also, completing provinces in a circular pattern around your city keeps the battle difficulty balanced. Each successive ring out from your city is a higher difficulty. The other thing I can think of that reduces battle difficulty is squad size upgrades. As you unlock those upgrades, provinces can change their current rating (ex: hard may go to medium; medium to easy) if your size improves enough to trigger the next lower rating. The squad size of the enemy troops was determined when the last 'advanced scout' technology was completed.
You can spend some time here:
https://us.forum.elvenar.com/index.php?threads/mykans-guide-fighting-guide.4205/ learning about the battle system. Each province type (marble, crystal, elixir, etc) has a key unit, you'll want to train up a bunch of those before fighting to clear that province. Learning which units are specialized against which enemy units will enable you to defeat enemies who outnumber you. I think the ratio of 1.5:1 requires a moderate level of tactical skill. You'll learn how to choose key units and support units in the guide, hopefully shortening the learning curve for strategy. You will not have all the unit types until mid-way through chapter 3. Until then, the battle system is stacked against you. It will ease up once you get all the unit types. Once you have a better feel for the cost and time to produce goods/troops, it will be easier to determine whether to negotiate or fight a specific encounter.
The other thing you can do while you build up your military units is build and upgrade military buildings. If you have the treant, you also have the cerberus if you build the training grounds (that tech is opened way before the treant). The guide has a good explanation of the effects of building and upgrading barracks, armories, and training grounds on the number and amount of time it takes to train units.
Hopefully, that's enough to get you started on developing and carrying out a plan to get the most out of your efforts in the game. It's a lot to wrap your brain around, but it's so much fun!