Where does “mobilisational” come from?

mobilisational (English) comes from English mobilisation, from French mobilisation, from French -ation, from Middle French -ation, from Old French -ation, from Latin -ātiō, from Latin -tiō, from Latin dissertātiō — small stone, pebble; gravel, rubble.

Ancestry of “mobilisational”, step by step

mobilisational traces back through two separate lines of ancestry.

via English mobilisation

StepLanguageWordMeaning
1Englishmobilisationthe act of mobilising
2Frenchmobilisationmilitarisation, mobilisation
3French-ationUsed to indicate action, condition, result or effect; -ation
4Middle French-ationation
5Old French-ationation
6Latin-ātiō
7Latin-tiōtion, -ation, -ing
8Latindissertātiō(spoken) dissertation, discourse, disquisition
9Latindissertusarranged, disposed; explained
10Latindissereresecond-person singular future passive indicative...
11Latindis-asunder, apart, in two; reversal, removal;...
12Latincalceusshoe
13Latincalxlimestone; chalk; the finish line
14Ancient Greekχάλιξsmall stone, pebble; gravel, rubble

via English AL

StepLanguageWordMeaning
1EnglishALInitialism of assembly language; Initialism of...
2Dutchalall, all of; already; yet
3Middle Dutchalall, all of; completely; even though, no matter...
4Old Dutchāl
5Proto-West Germanicallall
6Proto-Germanicallazall
7Proto-Indo-Europeanh₂él-to grow, nourish
Every word from Ancient Greek χάλιξEvery word from Latin -tiōEvery word from Latin dis-
mobilisational — Etymology, Origin & Word History | Etymology Explorer