On leadership, the following manuals are very organised and written well even the prefaces by themselves are succinct and take into account organisational conditions that could similarly occur for an engineering-focused org.
On technical writing aimed at and for an engineering team, since our subject is engineering strategy. Similar to the manuals above, these are succinct and cover a lot of ground.
On technical writing, this is a medical manual thats detailed and limited in scope for good reason. Look through and you can that it primarily serves as reference with the assumption of limited yet enough competence to do any medical work.
https://armypubs.army.mil/epubs/DR_pubs/DR_a/ARN30101-PAM_70...
https://safety.army.mil/Portals/0/Documents/ON-DUTY/AVIATION...
https://www.globalsecurity.org/military/library/policy/army/...
https://www.chemeurope.com/en/encyclopedia/Standing_operatin...
https://clik.dva.gov.au/sop-information/guide-using-sops
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3056180/
https://info.publicintelligence.net/ANA-7-10-2.pdf
https://www.cdc.gov/vhf/ebola/pdf/air-ground-patient-handoff...
Take your pick....