This is the 13535th most frequent Russian word.
наступательного
"Offensive" (relating to an attack or advance).
In this sentence, 'наступательного' modifies the noun 'наступления', indicating its offensive character, used as an adjective.
Стратегия наступательного наступления была тщательно разработана.
The strategy of the offensive attack was carefully planned.
Here, 'наступательного' describes the mood or disposition, modifying 'настроения', showcasing a figurative or metaphorical usage related to approach.
Наступательного настроения участники совещания приняли новые решения.
Being in an offensive mood, the participants of the meeting made new decisions.
In this context, 'наступательного' is associated with the style or method (modifying 'стиля'), specifically relating to a proactive or attacking manner in sports.