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Fig 1.

Number of battles by decade.

The three identified transitions correlate with periods of intensive warfare.

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Fig 1 Expand

Fig 2.

Size and casualty ratio by battle.

The total number of soldiers involved in each battle is defined in the Y axis while the size of each point shows the casualty ratio of the battle.

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Fig 2 Expand

Fig 3.

Time series of attrition.

Casualties of two forces as computed by the four competing models with P = 1.5, Bt = 0 = 15000 and Rt = 0 = 10000.

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Fig 3 Expand

Fig 4.

Flowchart for the ABC framework.

Example for a experiment using 1000 runs and tolerance τ = 0.01. Left side illustrates the rejection algorithm while the green panel details the simulation of the Lanchester model.

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Fig 5.

Model selection for different tolerance levels.

Proportion of the models used in the best runs for the four historical periods and three τ values (corresponding to the selection of left: 500, centre: 5000 and right: 50000 best runs).

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Fig 6.

Distance from fatigue model to evidence with τ = 0.0005.

Absolute distances (Y axis) of the best 500 runs ordered by rank (X axis, being 1 the best one), model (colour) and historical period (left to right).

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Fig 7.

Posterior distribution of μ.

Results for the fatigue model and τ = 0.0005.

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Fig 7 Expand

Fig 8.

Posterior distribution of σ.

Results for the fatigue model and τ = 0.0005.

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Fig 8 Expand

Fig 9.

Relation between μ and σ values with τ = 0.0005.

Large σ values are only selected when μ value is also large.

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Fig 9 Expand