## Problem Description and Gurobi Code

### Problem Description

The problem is a linear optimization problem with integer variables. The goal is to minimize the objective function:

`4.6 * mechanized infantry companies + 8.11 * logistics companies`

subject to various constraints on the resources/attributes of mechanized infantry companies and logistics companies.

### Constraints

The constraints can be summarized as follows:

* Resource constraints:
	+ Mobility rating: 5 (mechanized infantry companies), 6 (logistics companies)
	+ Defensive capability rating: 1 (mechanized infantry companies), 10 (logistics companies)
	+ Logistical capacity: 6 (mechanized infantry companies), 9 (logistics companies)
	+ Fun factor: 2 (mechanized infantry companies), 4 (logistics companies)
* Total combined constraints:
	+ Mobility rating: >= 17, <= 64
	+ Defensive capability rating: >= 21, <= 79
	+ Logistical capacity: >= 20, <= 36
	+ Fun factor: >= 19, <= 64
* Additional constraint: -3 * mechanized infantry companies + 10 * logistics companies >= 0
* Integer constraints: mechanized infantry companies, logistics companies are integers

### Gurobi Code

```python
import gurobi

# Create a new Gurobi model
m = gurobi.Model()

# Define the variables
mechanized_infantry_companies = m.addVar(name="mechanized_infantry_companies", vtype=gurobi.GRB.INTEGER)
logistics_companies = m.addVar(name="logistics_companies", vtype=gurobi.GRB.INTEGER)

# Define the objective function
m.setObjective(4.6 * mechanized_infantry_companies + 8.11 * logistics_companies, gurobi.GRB.MINIMIZE)

# Define the constraints
m.addConstr(5 * mechanized_infantry_companies + 6 * logistics_companies >= 17, name="mobility_rating_min")
m.addConstr(5 * mechanized_infantry_companies + 6 * logistics_companies <= 64, name="mobility_rating_max")
m.addConstr(1 * mechanized_infantry_companies + 10 * logistics_companies >= 21, name="defensive_capability_rating_min")
m.addConstr(1 * mechanized_infantry_companies + 10 * logistics_companies <= 79, name="defensive_capability_rating_max")
m.addConstr(6 * mechanized_infantry_companies + 9 * logistics_companies >= 20, name="logistical_capacity_min")
m.addConstr(6 * mechanized_infantry_companies + 9 * logistics_companies <= 36, name="logistical_capacity_max")
m.addConstr(2 * mechanized_infantry_companies + 4 * logistics_companies >= 19, name="fun_factor_min")
m.addConstr(2 * mechanized_infantry_companies + 4 * logistics_companies <= 64, name="fun_factor_max")
m.addConstr(-3 * mechanized_infantry_companies + 10 * logistics_companies >= 0, name="additional_constraint")

# Optimize the model
m.optimize()

# Print the solution
if m.status == gurobi.GRB.OPTIMAL:
    print("Optimal solution found.")
    print(f"Mechanized infantry companies: {mechanized_infantry_companies.varValue}")
    print(f"Logistics companies: {logistics_companies.varValue}")
    print(f"Objective function value: {m.objVal}")
else:
    print("No optimal solution found.")
```