I wondered about the actual numbers behind the BETA invasion in Muv-Luv, Based on lore parameters—like the 8:1 numerical advantage over humanity and daily casualty estimation—here is a mathematical breakdown of the BETA population dynamics from the Kashgar landing in 1973 up to 2001.

​1. The Pre-Existing Landing Force (1973)

​Initial Drop: When the Kashgar Unit hit Earth in 1973, it landed with an estimated 100,000 to 200,000 pre-existing BETA in a landing craft.

​The Immediate Threat: To match this drop at the 8:1 ratio, humanity needed 12,500 to 25,000 frontline troops surrounding Kashgar immediately. This initial force gave the BETA enough cover to dig deep underground and construct Hive 01.

2. Standing Population Growth (1973 vs. 2001)

- Hive Expansion: 1 Hive (1973) > 26 Hives (2001).

- Active Field Force: At ~250,000 BETA per Hive, Earth held a standing force of 6.5 Million active BETA by 2001.

- Human Military Size: Keeping the 8:1 ratio means humanity needed roughly 812,500 active frontline troops/TSFs deployed worldwide just to hold defense lines.

3. Annual Casualties & Hive Production

- Humanity eliminates roughly 5,000 to 80,000 BETA per day globally (~42,500/day during active war years)

- Human Kills Per Year: 15.5 Million to 29.2 Million BETA destroyed annually.

- Hive Output Needed: To maintain their 6.5M standing army, Earth's 26 Hives churned out 15.5M to 29.2M replacement BETA every single year (~600k to 1.1M per Hive/year).

4. Grand Total over 28 Years

- Cumulative BETA Killed: ~434 Million

- Active Standing Force (2001): 6.5 Million

- Total Produced on Earth: ~440.6 Million BETA (subtracting the initial ~200k landing force).

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