What critical impact on naval operations was observed following the Algerian War?

The choice regarding the return of Navy personnel to home ports is correct because it highlights a significant operational shift experienced by naval forces after the Algerian War. This conflict, which lasted from 1954 to 1962, prompted many nations, particularly France, to reassess their naval commitments and presence abroad.

As military operations concluded and the war came to an end, many personnel who had been deployed overseas returned to their home bases. This return was crucial for several reasons: it allowed for the reallocation of resources and personnel, the reassessment of naval strategy, and a focus on modernization and training at home ports. These operational shifts emphasized the importance of readiness within the Navy as nations worked to adapt to post-war realities.

The other choices present aspects that may have emerged in broader contexts but do not specifically capture the immediate operational changes noted in naval forces' activities post-Algerian War. For instance, while new alliances may have been formed as part of post-colonial realignments, this was not a direct impact on naval operations in the same way that personnel returning home was. Similarly, the commencement of naval blockades and advancements in naval technology can be seen in different historical contexts but do not directly define the aftermath of the Algerian War